Pivoted Relay Armature for Differentiated Contact Force Control
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Solution Overview
Problem
Existing relay technologies have a low utilization rate of magnetic driving force and cannot differentiate between different contact conditions, making it difficult to efficiently control and manage contact parameters.
Innovation Solution
The relay design includes a base, contact parts with movable and static contact units, a push rod assembly, and a magnetic circuit with an armature assembly, where the armature assembly is pivotally connected and driven by a coil assembly to apply different driving forces to the push rods based on varying contact conditions, allowing for distinct contact gaps and roles between arc-resistant and current-carrying contacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single magnetic driving force is used to control all contacts, then the structure is simple, but the utilization rate of magnetic driving force is low and contact conditions cannot be differentiated
Solution Approach 1:
The armature assembly is segmented into multiple driving ends (first driving end and second driving end), each connected to different push rods. This segmentation allows the single magnetic driving force to be distributed and differentiated to control different contact sets according to their specific conditions, resolving the contradiction between adaptability and structural simplicity.
Solution Approach 2:
Different driving ends of the armature assembly are positioned at different locations relative to the pivot point, creating local differences in lever arm length. This local quality variation enables differentiated control of contact gaps and contact forces for different contact sets, allowing the system to adapt to different contact conditions while maintaining a unified magnetic driving structure.
2Adaptability or versatility
If equal distances from pivot point are used for all driving ends, then the structure is symmetric and simple, but different contact gaps and contact conditions cannot be accommodated
Solution Approach 1:
The armature assembly employs asymmetric geometry where the first driving end and second driving end are positioned at different distances from the pivot point. This asymmetric design allows different contact gaps to be established for different contact sets, enabling the system to accommodate varying contact conditions while maintaining structural integrity.
3Use of energy by moving object
If the coil assembly drives all contact sets with the same force, then control is simple, but the utilization rate of magnetic driving force is low
Solution Approach 1:
The push rod assembly is segmented into multiple independent push rods (first push rod, second push rod), each connected to a specific driving end of the armature. This segmentation allows the magnetic driving force to be selectively applied to different contact sets based on their requirements, improving the utilization rate of the coil driving force while maintaining manageable structural complexity.
Solution Approach 2:
The system changes the parameter of driving force distribution by positioning driving ends at different distances from the pivot point. This parameter variation allows the same magnetic driving force to produce different effective forces on different contact sets, optimizing energy utilization without requiring additional coil assemblies or complex control mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design improves the utilization rate of the coil driving force by allowing differentiation in driving forces for different contact conditions, simplifying control and management of contact parameters, and enhancing the reliability of the relay's operation.
Implementation Method 1
the coil assembly is used to drive the armature assembly to swing relative to the base
Data Source
AI summary
A relay includes a base, a contact part disposed on the base and including two sets of movable contact part, a push rod assembly including a first push rod and a second push rod respectively connected to two sets of movable contact parts, and a magnetic circuit part including a coil assembly and an armature assembly. The armature assembly is pivotally connected to the base around a pivot point, and includes a first driving end connected to the first push rod to form a first force point and a second driving end connected to the second push rod to form a second force point. The distance between the first force point and the pivot point is not equal to the distance between the second force point and the pivot point.